Sheet fastening device



Jan. 8, 1935." w. w. KARLEN SHEET FASTENING DEVICE Filed March 19, 1954INVENTOR.

ATTORNEY.

Patented Jan. 8, 1935 l UNITEDSTAT ES;

. -.-SHEET FASTENING D V I Ka as. i s

. mannerisms. 1934-. saltwater c1. ma -25);,

"The principal object er ymvention s to provide a sheetfasteningfdevicethagt'iscapble of holding two sepame 'groups-ofsheets'.1 ffA further object {of thisinvention is toprovide a'sheet fasteningdevice adapted for use in combination with the ordinary'folder having acenter fastening tang flap that" permits the; tang of the folder to becomparatively narrow in width, thereby reducing the combined thicknessor the folders when 'in -their-flle cabinet A stillfurtheryobjebt of "myinventionis to provide a' sheet fastening "and holding' clasp for use inconnection with folders having a central fastening tang-flap thatpermits the securing of'the claspelement en; the 'iiapf'of the folderwithoutdangeri of the claspelement "becoming aenae tanytomtn gerrom. 1 1A- still further object of my invention is to provide a sheetastenihg'fdeviceithat is stamped from, a singlesheet of m "trial fj r Astill further' object-of this invention isto provide a sheetjfas'tenihg"devicethat is economie ahdjgiurable use. i

"objects will be apparent to those skilled in the art.

My invention consists in the construction, arrangement and combinationof the various parts of the device, whereby the objects contemplated areattained as hereinafter more fully set forth, pointed out in my claimsand illustrated in the accompanying drawing, in which:

Fig. 1 is a bottom plan view of my sheet holder secured to the ordinarytang flap of a folder.

Fig. 2 is a front marginal edge view of my device secured to a folderand showing the sheet receiving positions of the four arms in dottedlines.

Fig. 3 is a top plan view of my device secured to the tang flap of afolder.

Fig. 4 is a bottom plan view of my sheet securing clasp after it hasbeen stamped from a sheet of suitable material and before it has beenbent and folded.

Fig. 5 is an end view of my device taken on line 55 of Fig. 2, and morefully shows its construction.

Referring to the drawing, I have used the numeral to designate theordinary paper or like folder to which my device is secured. This folder10 is folded back upon itself near its center and then reversely foldedto form the usual center tang flap 11, the folds of the flap preferablybeing secured together. In the art it is the practice to secure thesheet attaching fasas shown; in? Fig-1.4..

tener to this flap 1 and device is no=exception to this practice; aswill be noted in the drawing. The elongated base portion of my device isdesignate'd by the numeral 12. Thisportion before bending and as showninjFigawi'l, isof flat rec- 5 tan gulan-cfin'struction. "-flhe'numeral's l 3 and I designate two comparatively short} clfamping tonguesintegrally farmed thetwo ends respectively of the portion 12. These twotongues extend opposite 1! directions froin -each -other and are locatedin a .plane near..;.the. inner o'r"rar sideedge of the porti0n. .:12;The.numerals':-15-and'16 designat'e, .two comparatively long; armsintegrally formed on:-the two endsmespectively ofthe base 15- portion12. The two arms extendnin" Opposite directions from; each oth er. and.are, located in s plane m n-t 39 i? i fi k g P th r i n 1 2an dbeforethesam ben :onto the folder,

Thefhuxneralsl'li n designate two arms similar tofthejjarms' 15 d whichare also e ra y arme n the two. nds i n v' l of the base'portion'l'l'These 'arm'sare parallel with the arms 15 and 16 and are positioned inspaced relationship between the arms 15, 16 and the tongues 13, 14. Thissheet fastening device, as shown in Fig. 4, is made of any suitablematerial such as bendable sheet metal, and after being stamped out asshown, is ready to be attached to the tang flap 11. To accomplish thisthe tongues 13 and 14 are bent'at right angles to the base 12 and areinserted through the two spaced apart slots 19 in the tang flap 11,after which they are clinched inwardly to a flat condition, as shown inFig. 3, thereby rigidly securing the base 12 to the under side of thetang flap. The slots 19 should be in close proximity of the base foldsof the flap 11, as shown in Fig. 1,'in order to eliminate anypossibility of the metal sheet holder being torn from the folder byusage. This desirable securing of the sheet holder a substantialdistance from the free marginal edge of the flap 11 is possible by theconstruction of my device.

The width of the base 12 relative to the flap 11 when the two aresecured together should be elements there are two arms (17 and is) forsecuring sheets below the flap 11 and two arms (15 and 16) for securingsheets above the flap 11. To attach the sheets which are usually sheetsof paper with indicia thereon, the arms are bent outwardly from the flap11' as shown in dotted lines in Fig 2, and then are again bentdownhighly desirable one andthat the folder will lie bent back uponitself and then reversely folded flat and compact, thereby conservingspace the file cabinet. By the tongues 13 andI4-engaging the flap 11near its secured edges the flap may. be of minimum width, which is notpossible in other devices of this class the 7 general public. a AlthoughI have described my device as 'usd' in combination with folders havingattachingtang fl s; it m y, be u co sstullx mo her. set-stun Somechangesmay be made in-the construction and arrangement, of my'improvedsheet fastening device, without departing from; the meal spirit ,and'purpose of my invention, and it is myintention to cover by my claims:any -modi fled formsyof structure or useof mechanical equivalentswhichmay be reasonably included within theirgscope'.

a li ...t

1. In a device-of theclass described, arectan? gular base memberbent-,uponitselfq-to-form a lower and an upper portion two; arms on thesaid upper portion, two-arms -onthe i said lower portion, and twoattaching tongues on 'the 5 said lower portion. ,1 2. In"combination-"with "a folderor-tl ie'like bent back upon itself andtheri rvqse1y 1o1aai to form a tang flapja'. base merr'iberjiiolded onrid around the free marginal edge'of saidr t anlg'i flap? a means for'rigidly e 1 e 1 flaatand rmssewedt t at-nor onb t a ab se tank flap,arms secured to that p 'on,of base thatis onthe upper/ side ffsa I flap;

arms secured to that portion of said base that is on the under side ofsaid flap. I

3. In combination with a folder or the like bent back upon itself andthen reversely folded to form a tang flap, a base member folded on andaround the free marginal edgeof said tang flap, tongues on said base andextending through said flap for securing said base to said tang flap,arms secured to that portion of said base that is on the upper side-ofsaidflap; and armsosecured to that portio'n of said 'base that is on theunder side, of said flap.

4. In combination with a folder or the like team ata'r i g flap, a basemember folded on and -P4'p l it lie flree marginal edge of said tangflap, "two fastening tongues on the portion of the'base' member" restingbelow the said flap and extending through said flap for securing saidbase. to said 'flapf'and two spaced apart arms on the part of 5; Incombination with ajfolder or thelike back u n el and t rr er f de WfizWHE-MR wa ebe ifQlded me d $9 the free marginaljledgeof saidtangflapyfastening ,tongues t on the portion of said.- base member belowsaid flap extending through said flap and positioned a substantialdistance from the free base member on jsaid flap; arms-secured to that ei n-Lqitsei base th is e melides! d,

that is on the ore es ta id b i aid 1.1m-

